Submergible heater



A. W. FLETCHER.- SUBMERGIBLE HEATER. APPLICATION FILED AUG-I6, 1921.

1, 11 3,268. Patented Apr. 18, 1922.

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- UNITEDISTATB ALFRED W FLETGHlE-R;,bFBBOQKLYN, NEW roux;

To allwhom it may concern:

, Be it known that l, ALFRED FLE'roHER, 'a citizen of the United States, and residing at Brooklyn, in the county oifiKings and State of New York, have'invented certain new and useful Improvements inSubmergible Heaters, of which. the'following is a specification, such as will enable those sln'lled in the art to which it" make and use the same.

j This invention relates to what are known.

, as submergible heaters,.andhthe object there of is to provide a device or apparatus 10f this classwhich is designed primarily'forl useiinheating water in bath-tubs; and: a fur- I ther'objectbeing to Provide i311 improved device of thisclass-which issimplelin construc-' tion', efficient; in operationandwhich may i also. .be used. for heating water in vesselsor receptacles other thanbath tubs and forany j I desired purpo'se, .-an d" with, these and] other: 7. objects in: view the: invention. consists n? a-.= deviceror apparatus-pot the class specified, constructed and operated as'hereinaiteudeiscribed andclaimed, The invention isfullyd1sclosedt 1n the following specificationfoi whichl the accom- I 'panying drawingtormsla part, n which the,

separate parts of improvement I are-ides:- ignated by suitablejcreference characters n Fig-"1 is a sectionalsideview' of a bath tub and. indicating the use submergible heater; 1 V

Fig. a plan, view of the heater, removed from-the bath tub; f

Fig. 3a section out 2; and,

. Fig. 4 a slde view'at right angles to that.

of Fig. ,1 with part of the construction In the drawing forming part of this specification, I have shown an ordinaryg'bathtub 1 a provided with the usual watersupply my invention, a I provide a submergible heater 6 which is adapted to be placed in the bath tub, and, in the construction shown, to rest on the bottom thereof; i

The main part of theheater consists of a 7 bottom or body part a, whichtor' the purposeof this description, will be called a: water heater or'boiler,; a nd th1s;:bo1ler,-1n

theeonstruction shown, 1s composed of sheet metal and islrectangular 1n; form belng Applicationfiled Au ust-16,1 21. Serial no. 492,68 1

appertains to providedlwith a of my;- improvedfaucets a only one of which is .sh'own,1.and" a drainage outlet a 1and, in'the'pra-ctice of.

SUBMERGIBLEHEATEB.

Patented square or approximately so, and said boiler comprises a top 0 a bottom-0 and, inthe construction shown, four similar sides '0. \Vithin the boiler are placed water circulating tubes (5 which, in the construction shown, are arrangedin three separate layers one above another,- the middle layer being a at right angles to the top and bottom layers.

In the bottom portion of the "boiler and restmg on the bottom thereof, in the construction shown, is a gasburner e composed oftop and bottom plates securedtogetherby screws or bolts e ,i;and .-in. the perimeter of. whlchi 1s a completej -annular row of gas outlets e eudsecuree centrallyffinfthei top of the burner e is a, tube f'which passes'up wardly" :through the boiler, through the top thereof, and connected with .the top-"oflthel tube f is a Bunsen burnercoupling g iwhiclr 'P b b er ctuplrn ttac'hment fg'r alve burner tube g alt willlbeunderstood that'the water cirf I culating tubes (13 extend entirely 'thrbu hith .1 borlerand are open-'atf-both ends, and at the e opposite sides of the-{boil r and centrally". r thereofl in the construction; showmiare ver i F- t .isprovide'clyv-ith air-inlets: f) in the sides i j 1 thereofland m theetop lofwhich .is g's ecured a n z 211161111761"? g 'fll'l ilre-ubottoll Portion otiwhich is a; valve ldevice"qt above which I 80 1 i i i i ii'z'liil 185K I I tical; air inlet members or tubes it, four of;

whih are pl y in the construction j shown, and these, airinlet members or-tubes are secured to the boiler'and extend dow-n wardly on the outer sides thereof to the bot-"T' I tom portion therofwhere they communicate with the boiler, or the interior thereof, through ports or passages'as shown at h Sec'ured'in the top 0 of the heater body or" boiler. are'xflue pipes 5 three of which are showmand thepilot burner tube 9 communicates with one of these flue pipes as clearly shown. I l I 'j In the construction shown both-the air inlet members or tubes hand the flue pipes extend a predetermined distance above the top of the heater body or boiler b and'the 105 air inlet members'or tubes 71., and"thiscon-" flue pipes 11 and project or extend above the stru'ction or arrangement facilitate the op-.

eration of the device or inafter described. f-

The nozzle member g'j is provided, with the usual reduced and ribbed orcorrugated apparatus ,as here nozzle'g with-which in the use of the 'device is connected a flexible tube by which gas is supplied to the burner e, and the operation of my improved submergible heater will be understood from the foregoing description taken inconnection with the following statement.

In practice, or when it is desired to heat water in the tub a, the heater is placed in the tub as shown in Fig. 1, and water is ad-- mitted to the tub until it covers the top of the heater body or boiler, as indicated in said figure, after which the valve 9 is opened and the gas passing through the V tub to the desired extent, after which the -heater and is ignited by the flame of the pilot burner tube g as will be readily understood.

It will be observed that theheater'body or boiler c is made somewhat in the manner I of an ordinary tubular boiler, and the water in the tub is free to circulate through all of the tubes-(Z, and the result of this operation is the quick heating ofthe water in the bath flow of gas into the burner e is cutoffiand the submergible heater removed from' the bathtub. It will be understood that when the gas and airiescapingrfrom the burner e is ignited, as hereinbefore described, the valve 5] of the pilot burner tube 'g is closed and the flue pipes i carry off the products of combustion arising from the burner e in the operation of the device, as hereinbefore described. I V

/Vith my improved submergible heater, a small amount of watermay be first heated to a high degree, after which the heater may be removed from the tub and cold water added to, or permitted to flow into the tub until the tub is filled to the desired extent, and the temperature of the water therein reduced to the degree required for bathing purposes, but my invention is not limited to any particular height of the air inlet tubes or members it, or the flue pipes i, and

the apparatus may be so made that the amount of water required for a bath may be all heated at one time up to the required degree, and it will thus be seen that my invention is not limited to the exact construction herein shown and described, nor to any particular method or process of using the same, and while I have shown and described the preferred form of my improved submer gible heater, it will be understood that my invention is not limited to the number or arrangement of the water circulating tubes ofthe body (Z, nor to the position in which they are placed in the body portion of the heater or boiler,nor to any particular means for supplylngair to the burner 6, nor to any particular form of said burner, and while I have shown said burner as resting on the bottom of the boiler, this is not necessary and said burner may be supported entirely by the tube f or in any other way, and it will also be noted that while I have shown the body portion or boiler of my improved submergible heater as without independent I claim: as new and desire to secure by'Letr ters Patent, is i J v i l. A submergible heater of the class described comprising a body portion orboiler, a burner device mounted in the bottom part of said body portion or boiler, means ufor oa supplying gas and air to said burner device, means for supplying air-to thebottom part portion or boiler, .meansfor per mitting the escape of the products of com bastion" from said-bodytportion or. boiler, and a plurality of water Lcirculatin tubes extending transversely-through sai body portion or boiler and on'e'above another. :f A 2. A submergible heater 'compr'ising a body portion or'boiler havin a disk-shaped burneriin the bottom thereo ,a gas and air supply tube passing upwardly through the ice top of the body portion or boiler and com municating with said burner, a gas and air supply device connected with the top of said supply pipe, water circulating tubes arranged within the body portion or boiler and extending transversely therethrough one above another and open at both ends, means for supplying air to the bottom part of the 11 body portion or boiler and escape flues connected with-the top thereof.

3. In a submergible heater, a body portion or boiler, provided with water circulating tubes which extend therethrough and which are open at both ends, a gas and air supply tube mounted vertically in saidbody portion or boiler and passing through the top thereof and extending thereabove and downwardly into the bottom part of the body portion or boiler, a gas burner device in the bottom part of the body portion or boiler and with whichsaid gas and air supply tube communicates, means for supplying gas and air to said'tube, means for sup- Having fully described my inventiomwhat' 1 is i plying air to the bottom part of the body portion or boiler, escape flue pipes connected with the top of the body portion or boiler, and a pilot burner device communicating with the top portion of one of said 'means for supplying gasand air to said tube, meansfor supplying air to the bottom part of the bodyportion or boiler, and es the body portion or boilerf.

cape flue pipes connected with the top of :5. submergible heater comprisingfa body portion or boiler provided withiwater-" circulating tubes passing 'therethrough and open at both ends, a gas supply'tube mount-" ed in the top of the body portion or boiler and extending above said top and downwardly into the bottom part of the body portion or boiler and communicating at its lower end with'a burner, ajgas and air inlet" device connectedwith and communicating with the top of said supply tube, .air inlet devices connected with the sides of the body '1 portion or boiler and communicating with the bottom part thereof,- and extending above the top thereof, and {-flue'pipes con- 'nected with the top of the body portion or boiler and communicating therewith and extending a predetermined distance above the top thereof. 4 6. A submergible heater; comprising a body portion or boiler provided withrwater circulating tubes passing therethrough and open at'both ends, argassupply tube mounted in the top of the body portion or boiler and extending above said top and down portion orboiler and communicating'at its lower end with aburner, a gas and air-inlet- 'wardl'y into the bottom part of the body, v

device connected with and communicating with the top ,of said supplytube, air inlet devices connected with the sides of the body portion or boiler and communicating with" the .bottompart thereof and extendingabove the top thereof, flue pipes connected with the top of the body portion or'boiler.

and communicating therewith and extending a predetermined. distance above the top with the gas and air supply, device and communicating with onelof said fluepipes, I

. 74 A Submergible vheater of-the class dei 7 scribed comprisinga box-shaped ea i g w tom' portion'zidf the cas ea Q P- plying gas and air to said burner' device, means' at the sidesof 'saidicasing for supcasing,'means in 'the top of sald casing for permitting the escape offithe products of? f V combustion therefrom, and a plurality or plying airto the bottom portion ofsaid tubes mounted transversely. of the casing in two: directionsuand; opening outwardly1 5 v through the sides thereof "and through 5 -which' water is. adapted to b'oirculated. i I n testimony that I claim the foregoing as my invention I have signed my name inf presence ofthe' subscribing witnesses this".

15th dayof August, 1921,; r

' mark -W1tnesses:

C-E-VMULREANY,' THOMPSOI;

, v burner device mounted centrally of the bot- 7;

FnEToH n e0 thereof, and a pilot burner tube connected. 

